Wichita (/ˈwɪtʃɪtɔː/ WITCH-ih-taw) is the largest city in the U.S. state of Kansas and the county seat of Sedgwick County. As of the 2020 census, the population of the city was 397,532. The Wichita metro area had a population of 647,610 in 2020. It is located in south-central Kansas on the Arkansas River.
Wichita began as a trading post on the Chisholm Trail in the 1860s and was incorporated as a city in 1870. It became a destination for cattle drives traveling north from Texas to Kansas railroads, earning it the nickname "Cowtown". Wyatt Earp served as a police officer in Wichita for around one year before going to Dodge City.
Zhidan County, which belongs to Yan'an City, Shaanxi Province, is located in the hilly and gully region of the Loess Plateau in the north of Shaanxi Province, connected with Ansai in the east, Wuqi County and Jingbian County in the northwest, Ganquan County and Fuxian County in the southeast, and Heshui County and Huachi County in Gansu Province in the southwest. Between longitude 108o 11mm 56 "- 109o 3m 48" east and latitude 36o 21m 23 "- 37o 11m 47" north, with a total area of 3781 square km. Zhidan County, formerly known as Baoan County, was renamed Zhidan County in June of 1936 in memory of General Liu Zhidan, a "mass leader and national hero". In July of the 25th year of the people's Republic of China (1936), the Central people's Government of the Chinese Soviet Union held the capital Zhidan. The CPC Central Committee and Chairman Mao fought and lived here for more than six months, known as the Central Committee of the Communist Party of China.